I bought a 280 used w/synthetic stock.
I have my 45/70 barrel on the stock now and decided to put some weight in the stock.
Took the recoil pad off and low and behold there is a 1/2" square steel bar w/ heavy foam
holding it in place in the middle of the stock, didn't measure it but would guess about 10'' I am guessing this the store bought recoil suppressor i have heard about.
took the foam out, cut the top of 16- 12ga. #4 shot shells and poured them in, put the foam back
gun almost balances inside the trigger guard.